Proactive threat detection and mitigation system designed to safeguard critical space assets against emerging threats leveraging: Stellar Guard = OT + IT + SAT Operational Technology (OT) Information Technology (IT) Situational Awareness (SAT)

 Stellar Guard continuously ingests telemetry from spacecraft subsystems, including power, communications, GPS, RF, and payload systems, creating a unified situational view onboard. 

 Dedicated, per-signal anomaly detectors run across all subsystems, identifying deviations, faults, and suspicious behaviors in real time. 

 Detected anomalies are fused across subsystems to uncover correlated events, enabling the identification of coordinated failures or cyber-physical attacks that would be missed in isolation. 

 Incidents are automatically mapped to established threat frameworks such as SPARTA and MITRE, providing structured classification and context-aware interpretation. 

 Using onboard AI, Stellar Guard generates root cause analysis and operational response playbooks, supporting autonomous decision-making and mitigation actions. 

Stellar Guard operates independently, enabling spacecraft to detect, assess, and respond to critical events without waiting for ground control.